Data Acquisition:The Aerial Photography over this area was acquired using the UCXp andUXC camera systems on the following dates:29-Dec-1019-Feb-1110-Mar-1111-Mar-1112-Mar-1129-Mar-1130-Mar-111-Apr-11

The data was collected flying 1900 - 2100 metres above lowest ground.These settings were selected to create a dataset with 0.125mGSD.NZAM used a number of LINZ geodetic marks, Geosystems iBASE andNZAM geodetic marks for the collection of GPS basestation data during theaerial data acquisition. Detail of these will be provided in the final projectreport.Independent of the aerial survey work Opus International ConsultantsLimited surveyed a series of ground control points for use in the AerialTriangulation of the raw images, and for QA of the final orthophotos.

Data Processing:The sensor positioning and orientation (POS) was determined using theacquired GPS/IMU datasets and Applanix POSPac software. This work wasall undertaken in NZGD2000 geodetic reference system using the datacollected at the LINZ geodetic reference marks for the differential processing.The POS data was combined with the ground control in Aerial Triangulation(AT) to geo-reference the raw photography in NZTM map projection. Thisprocess was undertaken using Microsoft’s UltraMap AT and Leica’s ORIMAsoftware.AT data, raw images and processed LiDAR DTM data were supplied to theorthophoto production team for Orthophoto Generation. All subsequent dataprocessing steps were undertaken using Inpho’s OrthoVista, PCI and SocetSet processing software.The final orthophotos were checked for completeness of project coverage,general appearance and accuracy.The positional accuracy of the data has been checked by overlaying the Opusfield surveyed features on the dataset. The data was found to fit well inposition. The project specified positional accuracy of +/-0.3m (90%confidence) has been met.

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